# Copyright (c) 2018 Uber Technologies, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
#     Unless required by applicable law or agreed to in writing, software
#     distributed under the License is distributed on an "AS IS" BASIS,
#     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#     See the License for the specific language governing permissions and
#     limitations under the License.

from functools import reduce
from operator import mul


def sum_aggregation(inputs):
    return sum(inputs)


def prod_aggregation(inputs):
    return reduce(mul, inputs, 1)


str_to_aggregation = {
    'sum': sum_aggregation,
    'prod': prod_aggregation,
}
